XC6601 TOREX | Alldatasheet
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Low Voltage Input LDO Voltage Regulators ˙FEATURES Maximum Output Current : 400mA (Limiter 500mA TYP.) Dropout Voltage Bias Voltage Range : 35mV@I OUT=100mA (TYP.) (at VBIAS - VOUT(E)=2.4V) : 2.5V ~ 6.0V (VBIAS - VOUT(E)ʾ0.9V) Input Voltage Range : 1.0V ~ 3.0V Output Voltage Range Output Voltage Accuracy (VINʽVBIAS) : 0.7V ~ 1.8V (50mV increments) :ʶ20mV Power Consumption : I BIAS=25ЖA , IIN=1.0ЖA (TYP.) : IBIAS=0.01ЖA , IIN=0.01ЖA (TYP.) U.V.L.O. TSD (Detect/Release) Operating Temperature Range : VBIAS=2.0V, VIN=0.4V (TYP.) :150ˆ/125ˆ (TYP.) : -40ˆ ~ 85 ˆ CL High Speed Auto-Discharge Low ESR Capacitor : Ceramic Capacitor Compatible Packages : USP-6C, SOT-25, SOT-89-5 ˙APPLICATIONS ˔Mobile phones ˔Cordless phones ˔Wireless communication equipment ˔Portable games ˔Cameras ˔Audio visual equipment ˔Portable AV equipment ˔PDAs ˙çTYPICAL APPLICATION CIRCUIT ˔VBIAS =3.6V , VIN =1.5V , VOUT =1.2V ˙çTYPICAL PEFORMANCE CHARACTERISTICS ˔Dropout Voltage vs. Output Current ETR0335_002 ˙GENERAL DESCRIPTION The XC6601 series is a CMOS LDO voltage regulator with precise (ʶ20mV) outputs which enables the operation in ultra low On resistance even where low output voltages to achieve high efficiency of the output current. The series is suited for the application which requires low dropout voltage operation. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a fold back circuit, a thermal s hutdown (TSD) circuit, a Under Voltage Lock Out (U.V.L.O.) and a phase compensation circuit. The output voltage is selectable in 50mV increments within the range of 0.7V to 1.8V using laser trimming technologies. The output stabilization capacitor (CL) is also compatible with low ESR ceramic capacitors. The over current protection circuit (the current limiter and the fold back circuit) and the thermal shutdown circuit (the TSD circuit) are built-in. These two protection circuits will operate when the output curre nt reaches limit level or the junction temperature reaches temperature limit level. voltage or lower. The CE function enables the output to be turned off and the series becomes a stand-by mode resulting in greatly reduced power consumption. At the time of entering the stand-by mode, the series enables the electric charge at the output capacitor (CL) to be discharged via the internal auto-discharge switch placed between the VOUT pin and the VSS pin, as a result the VOUT pin quickly returns to the VSS level. Preliminary
(TOP VIEW) 123 ˔USP-6C ●SOT-25çççççç ●SOT-89-5 PIN NUMBER USP-6C SOT-25 SOT-89-5 PIN NAME FUNCTION 1 2 2 V BIAS Power Supply Input 3 1 4 V IN Driver Transistor Input 4 5 5 V OUT Output 2 3 3 V SS Ground 6 4 1 CE ON/OFF Control MARK DESCRIPTION SYMBOL DESCRIPTION A : CE High Active, Pull-Down Resistor Built-in, CL Auto Discharge Function ① Type of Regulators B : CE High Active, No Pull-Down Resistor Built-in, CL Auto Discharge Function ②③ Output Voltage 07 ~ 18 : e.g.) VOUT(T)=1.2V⇒②=1,③=2 1 : 100mV increments, ±20mV accuracy e.g.) 1.2V⇒②=1,③=2,④=1 ④ Output Voltage Accuracy B : 50mV increments, ±20mV accuracy M : SOT-25 E : USP-6C ⑤ Packages P : SOT-89-5 R : Embossed Tape (Standard Feed) ⑥ Device Orientation L : Embossed Tape (Reverse Feed) ˙PIN CONFIGURATIOIN ˙PIN ASSIGNMENT ˙PRODUCT CLASSIFICATION ˔Ordering Information XC6601①②③④⑤⑥ *The heat dissipation pad of the USP-6C package is recommended to solder as the recommended mount pattern and metal mask pattern for mounting strength. The mount pattern should be electrically opened or connected to the V BIAS (No.1) pin.
˙BLOCK DIAGRAMS (1) XC6601A Series (2) XC6601B Series *Diodes inside the circuit are an ESD protection diode and a parasitic diode.
PARAMETER SYMBOL RATINGS UNITS Bias Voltage V BIAS V SS-0.3 ~ +7.0 V Input Voltage V IN V SS-0.3 ~ +7.0 V Output Current I OUT 700 (*1) mA VSS-0.3 ~ VBIAS+0.3 Output Voltage V OUT VSS-0.3 ~ VIN+0.3 V CE Input Voltage V CE V SS-0.3 ~ +7.0 V USP-6C 120 SOT-25 250 Power Dissipation SOT-89-5 Pd 500 mW Operating Temperature Range Topr -40 ~ +85 ℃ Storage Temperature Range Tstg -55 ~ +125 ℃ (*1) IOUT=Less than Pd / (VIN-VOUT) PARAMETER SYMBOL CONDITIONS MIN. TYP . MAX. UNITS CIRCUIT Bias Voltage (*1) V BIAS VCE =VBIAS,VIN =VOUT(T)+0.3V 2.5 - 6.0 V ᶃ Input Voltage (*2) V IN VBIAS=VCE=3.6V 1.0 - 3.0 V ᶃ -0.02 V OUT(T) (*4) +0.02 Output Voltage V OUT(E) (*3) VBIAS=VCE=3.6V, VIN =VOUT(T)+0.3V, IOUT=1mA E-0 (*5) V ᶃ Maximum Output Current IOUTMAX V BIAS=VCE=3.6V, VIN =VOUT(T)+0.3V 400 - - mA ᶃ Load Regulation ˚VOUT VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V, 1mAʽIOUTʽ100mA - 10 - mV ᶃ Dropout Voltage Vdif (*7) VBIAS=VCE, IOUT=100mA E-1 (*6) mV ᶃ Supply Current 1 I BIAS VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V VOUT=OPEN - 25 - ЖA ᶃ Supply Current 2 I IN VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V VOUT=OPEN - 1.0 - ЖA ᶃ VOUT(T)ʾ0.95V, VBIAS=CE=3.6V, VIN=VOUT(T)+0.05V, VOUT=VOUT(T) - 0.05V Bias Current (*10) I BIASMAX VOUT(T)ʻ0.95V, VBIAS=CE=3.6V, VIN=1.0V VOUT= VOUT(T) - 0.05V - 2.0 - mA ᶃ Stand-by Current 1 I BIAS_STB VBIAS=6.0V, VIN=3.0V, VCE=VSS - 0.01 - ЖA ᶃ Stand-by Current 2 I IN_STB VBIAS=6.0V, VIN=3.0V, VCE=VSS - 0.01 - ЖA ᶃ Bias Regulation ˚VOUT/ ˚VBIASɾVOUT 2.5VʽVBIASʽ6.0V, VIN=VOUT(T)+0.3V, VBIAS=VCE, IOUT=1mA - 0.01 - %/V ᶃ VOUT(T)ʾ0.90V, VOUT(T)+0.1VʽVINʽ3.0V, VBIAS=VCE=3.6V, IOUT=1mA Input Regulation ˚VOUT/ ˚VINɾVOUT V OUT(T)ʻ0.90V, 1.0VʽVINʽ3.0V VBIAS=VCE=3.6V, IOUT=1mA - 0.01 - %/V ᶃ IOUT=1mA - 2.0 - V ᶃ VBIAS Ripple Rejection V BIAS_PSRR VBIAS=3.6VDC+0.2Vp-pAC, VIN=VOUT(T)+0.3V, IOUT=30mA,f=1kHz - 40 - dB ᶄ VIN Ripple Rejection V IN_PSRR VIN=VOUT(T)+0.3VDC+0.2Vp-pAC, VBIAS=3.6V, IOUT=30mA, f=1kHz - 60 - dB ᶄ ˙MAXIMUM ABSOLUTE RATINGS ˙ELECTRICAL CHARACTERISTICS Ta=25 ˆ Ta=25 ˆ
OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) SETTING OUTPUT VOLTAGE (V) VOUT SETTING OUTPUT VOLTAGE (V) VOUT VOUT(T) MIN. MAX. VOUT(T) MIN. MAX. 1.25 1.230 1.270 PARAMETER SYNBOL CONDITIONS MIN. TYP . MAX. UNITS CIRCUIT Output Voltage Temperature Characteristics ˚VOUT/ ˚ToprɾVOUT VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V , IOUT=30mA, - 40ˆʽ Topr ʽ85ˆ - ʶ100 - ppm/ ˆ ᶃ Limit Current I LIM VOUT=VOUT(E)ʷ0.95, VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V 400 - - mA ᶃ Short Current I SHORT VBIAS=VCE=3.6V, VIN=VOUT(T)+0.3V, VOUT=0V - 50 - mA ᶃ Thermal Shutdown Detect Temperature TTSD Junction Temperature - 150 - ˆ ᶃ Thermal Shutdown Release Temperature TTSR Junction Temperature - 125 - ˆ ᶃ Hysteresis Width T TSDʵTTSR - 25 - ˆ ᶃ CL Auto-Discharge Resistance (*7) Rdischg VBIAS=3.6V, VIN= VOUT(T)+0.3V, VCE= VSS, VOUT=VOUT(T) - 450 - Њç ① CE "H" Level Voltage V CEH VBIAS=3.6V, VIN= VOUT(T)+0.3V 1.0 - 6.0 V ᶃ CE "L" Level Voltage V CEL VBIAS=3.6V, VIN= VOUT(T)+0.3V - 0.25 V ᶃ CE "H" Level Current (A Series) 3.5 - 7.0 CE "H" Level Current (B Series) ICEH VBIAS=VCE=6.0V, VIN=VOUT(T)+0.3V -0.1 - 0.1 ЖA ᶃ CE "L" Level Current I CEL VBIAS=6.0V, VCE=VSS VIN=VOUT(T)+0.3V -0.1 - 0.1 ЖA ᶃ ˙OUTPUT VOLTAGE CHART NOTE: * 1: Please use Bias voltage VBIAS within the range VBIAS –VOUT(E)ʾ0.9V * 2: Please use Input voltage VIN within the range VINʽVBIAS * 3: VOUT(E) = Effective output voltage (Refer to the voltage chart E-0 and E-1) * 4: VOUT (T) = Specified output voltage * 5: E-0 = Please refer to the table named OUTPUT VOLTAGE CHART * 6: E-1 = Please refer to the table named DROPOUT VOLTAGE CHART * 7: Vdif = {V IN1(*8)-VOUT1(*9)}. * 8: VIN1 = The input voltage when VOUT1 appears as input voltage is gradually decreased. * 9: VOUT1 = A voltage equal to 98% of the output voltage while maintaining an amply stabilized output voltage when VIN=VOUT(T) ʴ0.3V is input at the VIN pin. * 10: IBIASMAX = A supply current at the VBIAS pin providing for the output current (IOUT) . ˙ELECTRICAL CHARACTERISTICS (Continued) Ta=25 ˆ
DROPOUT VOLTAGE (mV) Vdif SETTING OUTPUT VOLTAGE (V) Vdif Vdif Vdif Vdif Vdif VOUT(T) Vgs ˙DROPOUT VOLAGE CHART (Continued) *1): Vgs is a Gate –Source voltage of the driver transistor that is defined as the value of VBIAS - VOUT (T). A value of the dropout voltage is determined by the value of the Vgs.
<Voltage Regulator> The voltage divided by resistors R1 & R2 is compared with the internal reference voltage by the error amplifier. The P-channel MOSFET which is connected to the VOUT pin is then driven by the subsequent output signal. The output voltage at the VOUT pin is controlled & stabilized by a system of negative feedback. VBIAS pin is power supply pin for output voltage control circuit, protection circuit and CE circuit. When output current increase, the VBIAS pin supplies output current also. VIN pin is connected to a driver transistor and provides output current. In order to obtain high efficient output current through low on-resistance, please take enough Vgs (=VBIAS – VOUT) of the driver transistor. Output current triggers operation of constant current limiter and foldback circuit, heat generation triggers operation of Further, the IC's internal circuitry can be shutdown via the CE pin's signal. ç XC6601A series <Low ESR Capacitor> With the XC6601 series, a stable output voltage is achievable even if used with low ESR capacitors, as a phase compensation circuit is built-in. The output capacitor (CL) should be connected as close to VOUT pin and VSS pin to obtain stable phase compensation. Values required for the phase compensation are as the table below. For a stable power input, please connect an bias capacitor (CBIAS ) of 1.0ЖF between the V BIAS pin and the VSS pin. Also, please connect an input capacitor (CIN) of 1.0ЖF between the VIN pin and the VSS pin. In order to ensure the stable phase compensation while avoiding run-out of values, please use the capacitor (CBIAS, CIN, CL ) which does not depend on bias or temperature too much. The table below shows recommended values of CBIAS, CIN, CL. ç Recommended Values of CBIAS, CIN, CL BIAS CAPACITOR INPUT CAPACITOR OUTPUT CAPACITOR SETTING VOLTAGE CBIAS CIN CL ˙OPERATIONAL EXPLANATION
ç ç ç CL High Speed Auto-Discharge>ç XC6601 series can quickly discharge the electric charge at the output capacitor (CL) when a low signal to the EN pin which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor located between the VOUT pin and the VSS pin. When the IC is disabled, electric charge at the output capacitor (CL) is quickly discharged so that it could avoids malfunction. At that time, CL discharge resistance is depended on a bias voltage. Discharge time of the output capacitor (CL) is set by the CL auto-discharge resistance (R) and the output capacitor (CL). By setting time constant of a CL auto-discharge resistance value [R] and an output capacitor value (CL) as Н(Н=C x R), the output voltage after discharge via the N channel transistor is calculated by the following formulas. V = VOUT x e –t/Н, or ｔ=τln（ V OUT(E) / V ） V : Output voltage after discharge, VOUT(E) : Output voltage, t: Discharge time, Н: CL auto-discharge resistance RʷOutput capacitor (CL) value C <Current Limit, Short-Circuit Protection> The XC6601 series’ foldback circuit operates as an output current limiter and a short protection of the output pin. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. When the output pin is shorted to the VSS level, current flows about 50mA. <Thermal Shutdown Circuit (TSD) > When the junction temperature of the built-in driver transistor reaches the temperature limit level (150ˆ TYP.), the thermal shutdown circuit operates and the driver transistor will be set to OFF. The IC resumes its operation when the thermal shutdown function is released and the IC’s operation is automatically restored because the junction temperature drops to the level of the thermal shutdown release temperature (125ˆ TYP.). ç ç <Under Voltage Lock Outç(U.V.L.O.)ç> ç ç When the VBIAS pin voltage drops below 2.0V (TYP.) or VIN pin voltage drops below 0.4V (TYP.), the output driver transistor is turned on in the state and start to operate voltage regulation. <CE Pin> The IC internal circuitry can be shutdown via the signal from the CE pin with the XC6601 series. In shutdown mode, output at the VOUT pin will be pulled down to the VSS level via R1 & R2. However, as for the XC6601 series, the CL auto-discharge resistor is connected in parallel to R1 and R2 while the power supply is applied to the VIN pin. Therefore, time until the VOUT pin reaches the VSS level becomes short. The CE pin of XC6601A has pull-down circuitry so that CE input current increase during IC operation. The CE pin of XC6601B does not have pull-down circuitry so that logic is not fixed when the CE pin is open. If the CE pin voltage is taken from VBIAS pinç or VSS pin then logic is fixed and the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry when medium voltage is input. 1. Please use this IC within the stated absolute maximum rati ngs. The IC is liable to malfunction should the ratings be exceeded. 2. Where wiring impedance is high, operations may become un stable due to noise and/or phase lag depending on output current. Please keep the resistance low between VBIAS and VSS wiring or VIN and VSS wiring in particular. 3. Please wire the bias capacitor (C BIAS), input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible. ûõ Capacitance values of these capacitors (C BIAS, CIN, CL) are decreased by the influences of bias voltage and ambient temperature. Care shall be taken for capacitor selection to ensure stability of phase compens ation from the point of ESR influence.çç ˙NOTE ON USE ˙OPERATIONAL EXPLANATION (Continued)
Circuit ᶃ Circuit ᶄ ˙TEST CIRCUITS
˔USP-6C ˔SOT-25çççççççççççççççççççççç˔ SOT-89-5 ç ˙PACKAGING INFORMATION USP-6C Recommended Pattern Layout USP-6C Recommended Metal Mask Design
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